Yes, you are absolutely permitted to bring your own food and drinks on Eurostar trains in 2026. Unlike airlines, Eurostar has very relaxed rules regarding liquids, meaning you can bring a cup of coffee, bottled water, or even a bottle of wine or a few beers to enjoy at your seat. There are limitations on alcohol consumption, however: per person, you are generally limited to four 440ml bottles/cans of beer or one 750ml bottle of wine; spirits are usually not permitted for on-board consumption. In 2026, it is also important to be aware of post-Brexit customs regulations regarding food. While you can eat almost anything during the journey, if you are traveling from the UK to the EU (or vice versa), there are strict bans on bringing meat or dairy products across the border. If you don't finish your ham sandwich or yogurt before arrival, you may technically be required to dispose of it. For those who prefer not to pack a lunch, the "Eurostar Café" bar-buffet remains open in the middle of the train, serving a variety of hot and cold snacks.